Paper-reel changing device in rotary printing machines



April 29, '1941. F. PoNDoRF 2,239,971

PAPER-mm. swam@ Dnvrcs 1N mm? PRINTING mcnrns Filed am@ 24,1955 s 2 sheets-sheet 1 April 29, 1941. F. PoNDoRF 2,239,971

PAPER-REEL CHANGING DEVICE IN Roman? PRINTING NAcHxNEs Filed'June 24, 19256 2 Sheets-Shea?I 2 Hy. 5 By Patented Apr. 29, 1941 PAPER-REEL CHANGING DEVICE IN ROTARY PRINTING MACHINES Friedrich Pondorf, Plauen, Germany, assignor to R. Hoe & Co., Inc., New York, N. Y., a corporation of New York Application June 24, 1936, Serial No. 87,052 In Germany July 2 1935 4 Claims.

This invention relates to a paper-reel changing device for rotary printing machines, in which the pasting operation is effected by causing a point of the replacement reel to be connected in register during pasting with one of the corresponding periodically recurring points of theweb that is running off. v

The invention contemplates a printed web of paper provided with spaced control marks, which runs into a rotary printing machine the products `of which are to be provided with supplements or insets p-repared on another printin-g machine.

In V such cases it was hitherto impcssiblev to change the reels during operation of the machine as it had to be stopped in order to join the webs with the printing in register. The invention permits the changing of reels without stopping the machine, and automatically, even when the new web has to be pasted in register with the old web.

The object of the invention is attained by making the operation of the means for pasting the new web to the old web, dependent upon the pasting point on the replacement web being brought opposite the point of the old web to be united therewith, to effect which, the old web is guided over a feeling device disposed the length of a sheet from the pasting point. By means of marks provided on the web and spaced the length of a sheet the feeler actuates an electric contact device while a second contact device connected with the replacement reel becomes operative when the pasting point of the replacement reel passes the web splicing means, so that by synchronous operation of both contact devices the web splicing means, for instance at the simultaneous flashing of two signal lamps connected in the respective circuits, can be released by hand or automatically if the two contact devices are connected in series in a circuit the current of which passes through the releasing device.

To permit phase displacement between the web that is running off and the revolving replacement reel the adjustment of the latter may be additionally effected by a differential gear of suitable type.

By way of example, the invention is illustrated in the accompanying drawings, in which Figure 1 is a simplified view of the paper-reel changing device according to the invention; Fig. 2 shows the arrangement of a diierential gear; Fig. 3 is a wiring diagram of the signal arrangement for two signal lamps; Fig. 4 is a wiring diagram for one signal lamp; and Fig. 5 is a circuit diagram showing the release of the pasting brush.

Referring to the drawings, on the stand I the star-shaped reel carrier 2 is rotatably disposed. 4 is the unrolling reel which is driven by the belt I2 from the pulleys Il. is driven by the belt 5 from the pulley 1 at the same circumferential speed as the reel 4. 'I'he web from the unrolling reel 4 is led over a drum 8 from which it is directed into the printing machine. On the shaft of the replacement reel `3 one or more cams I5 are so arranged that a contact'device I4 is actuated when a mark or perforation 6 provided on the web of the replacement reel 3 is opposite the brush or web splicing means I3. The contact device I4 may `be of diiierent construction, provided `it is connected with the replacement reel 3 in such manner that the contact or contacts are actuated always at the time speciiied. The contact device I4 may either light up or extinguish a signal lamp or close an interruption in the circuit whereby the brush releasingdevice is controlled or actuated.

The release of the web splicing means is rendered dependent also upon the adjustment of the old web to the pasting point in such manner that the release can be effected only if corresponding portions of the replacement reel and of the old web are oppositely positioned at the pasting point. For this purpose a second contact device I0 is provided which is arranged in association with the drum 8 to bearon the old web at a distance of the length 'of a sheet or a multiple thereof behind the pasting point. At this point the contact device Il! is actuated'when the marks or perforations arranged the distance of a sheetlength on the unrolling web, pass under the contact device I D, and permit it to contact the drum 8 at the point 9. In this manner a second signal lamp may be lighted or extinguished, or a contact device serially connected with the contact I 4 in the circuit niluencing the release of the web splicing means may be closed. In the latter case, the brush I3 is` automatically released when the two contact devices of the releasing circuit are closed by the `markings of the reel 3 and of the unrollingweb coming into register. If signal lamps are actuated by the contact devices release of the brush I3 `can take place by hand.

The motion of the star-shaped carrier of the reels can be automatically or manually controlled by known means.

The requisite synchronism of the replacement reel with the unrolling web can be brought about by the operation of a differential gear I9, 20, 2|, 22, 23 which may be disposed on the shaft driving the belt 5. In the construction shown in The replacement reel 3 Fig. 2 the hand Wheel 24 xably arranged in the side frame of the machine effects rotation of the pulley I relative to the toothed wheel I8 driving it, and thereby causes rotation of the reel 3 relative to the unrolling web by means of the pinion 23, the toothed rim of the differential casing I9 and one or more planet wheels 22. The drives of the unrolling web by the pulleys II, the feeler drum 8 and the drive of the reel 3 by the pulley 'I are connected by means of the toothed wheels I6, I'I and I8. The contact device Il] may simultaneously serve in known manner for controlling the feeding in register of the printed supplement to the folder of the rotary printing machine, with the products of which the printed supplement may be folded. For this purpose it may be constructed along the lines of lthe known insettin-g devices so as to cause the perforations on the web moving past the contact device Il! always to remain at the feeling point by suitably accelerating or decelerating the drive of the replacement web roll.

In connection with the various circuits referred to in the foregoing, Figs. 3 to 5 illustrate the various details of the control devices. In Fig. 3,

indicates the connections' to a source of current as for example to a power line in which one or the other pole of the circuit can be chosen for the signal lamps and the other grounded. The current flows through the wire 28 to the signal lamp 26 and then through the further wire 29 to the Contact brush IIE. X'Vhen a perforation in the paper web passes over the drum 8 the electric current is grounded and the lamp 26 will light up. At the same time the electric current also flows through the second circuit by means of the wire 30 and the signal lamp 21 and the further wire 3| to the contact brush I4 which latter cooperates with the rotating cam I5. The cam I5 is grounded and in accordance with the circuit illustrated in Fig. 3 the release of the brush I3 of Fig. 1 can take place at the moment when both signal lamps 2B and 2'.' are simultaneously lighted.

Fig. 4 shows a wiring diagram in which the ycircuit is connected to a source of current 25. The current flows through the wire 32 to the contact brush III and when a perforation appears in the paper web the circuit is grounded through the drum 8. The signal lamp 34 is in the circuit 33 and at the instant that the contacts I0 and I4 simultaneously make contact respectively, with the drum 8 and the cam I5, this lamp 34 will be lighted. The current ows through the frame of the machine from the drum 8 to the cam I5 which is also grounded and from there through the contact brush I 4 and the wire 33 to the signal lamp 34.

Fig. 5 shows at 36 the connection to the source of current and the wire 31 connecting one side of the source with the contact brush I3 and the drum 8 from and to the ground. From the ground, that is the frame of the machine the current flo-ws through the grounded cam I5 to the contact spring I4 and by means of the wire 38 to the electro-magnet 39. From the electromagnet 39 the current flows to a switch 4I by means of a wire 43 and from the switch to the other connection 36 by means of the wire 42. When the electro-magnet 39 is energized the armature 43 will be pulled into the magnet and in this way the web splicing means I3 is released from the latch 44. By means of the switch 4I the web splicing means can be made self acting.

I claim:

1. In a paper reel changing device for a machine arranged to produce printed products in which a previously printed web is associated with a web printed by the machine, means for rotatably supporting a replacement reel having a printed web `and for supporting a web reel from which a printed web is being led adjacent to the replacement reel and thence fed to the machine, said webs having perforations therein spaced a page length apart, a first contact making device including a part rotatable with the replacement reel in line with a perforation in the web thereof and actuated when the perforation in the web of the replacement reel passes a selected peint, a second contact making device in the path of the web being fed and at a distance from the said point governed by the page length of the printed products, means to drive the replacement reel at a speed corresponding with the speed of the web being fed, means to alter the speed of the driving means to bring the perforations in the said webs in opposite relation, signal means actuated by operation of the said Contact making devices to indicate when a perforation in one web is opposite a perforation in the other web, and means for joining the web of the replacement reel to the web being fed.

2. In a paper reel changing device for a machine arranged to produce printed products in which a previously printed web is associated with a web printed by the machine, means for rotatably supporting a replacement reel having a printed web and for supporting a web reel from which a printed web is being led adjacent to the replacement reel and thence fed to the machine, said webs having perforations therein spaced a page length apart, a first contact making device including a part rotatable with the replacement reel in line with' a perforation in the web thereof and actuated when the perforationin the web of the replacement reel passes a selected point, a second contact making device in the path of the web being fed and at a distance from the said point governed by the page length of the printed products, means to drive the replacement reel at a speed corresponding with the speed of the web being fed, means to alter the speed of the driving means to bring the perforations in the said webs in opposite relation, means for joining the web of the replacement reel to the web being fed, and means actuated when a perforation on the replacement reel is opposite a perforation on the running web, to automatically actuate the web joining means.

3. In a paper reel changing device for a machine arranged to produce printed products in which a previously printed web is associated with a web printed by the machine, means for rotatably supporting a replacement reel having a printed web and for supporting a web reel from which a printed web is being led adjacent to the replacement reel and thence fed to the machine, said webs having perforations therein spaced a page length apart, a rst contact making device including a part rotatable with the replacement reel in line with a perforation in the web thereof and'actuated when the perforation in the web of the replacement reel passes a selected point, asecond contact making device in the path of the web being fed and at a distance from the said point governed by the page length of' the printed products, means connected to the machine to drive the replacement reel at a speed corresponding with the speed of the web being fed, a normally inactive diiferential device associated with the replacement reel driving means and manually operable to superimpose an ad- Vancing and a retarding motion on the replacement reel with respect to the motion of the web being fed, signal means actuated by operation of the said contact making device to indicate when a perforation in one Web is opposite a perforation of the other web, and means for joining the Web of the replacement reel. t

4. In a paper reel changing device, means to rotatably support a replacement reel having a printed web and a reel from which a printed web is being led adjacent to the replacement reel, said webs having spaced apart perforations therein, the spacing of perfcrations in one web being equal to the spacing of perforations in the other web, a irst electrical Contact making device including a part rotatable with the replacement reel and in line with a perforation in the web thereof, said Contact making device being actuated when the perforation in the Web reaches a determined point, a second electrical Contact making device in the path of the web being led and at a distance from the said point governed by the spacing between the perforations in the Webs, means to drive the replacement reel at a speed corresponding to the speed of the Web being led, means to vary the speed of said driving means to register the perforations in Said Webs, an electrically operable device energized when said contact making devices are simultaneously actuated, due to the periorations in said Webs being in register, and means to join said Webs.

FRIEDRICH PONDORF. 

